Results 11 to 20 of about 1,543,100 (341)

Photosynthetic Fluorescence from Earth-Like Planets around Sun-Like and Cool Stars [PDF]

open access: yes, 2023
Remote sensing of the Earth has demonstrated that photosynthesis is traceable as the vegetation red edge (VRE), which is the steep rise in the reflection spectrum of vegetation, and as solar-induced fluorescence. This study examined the detectability of biological fluorescence from two types of photosynthetic pigments, chlorophylls (Chls) and ...
arxiv   +1 more source

The DIVER Microscope for Imaging in Scattering Media

open access: yesMethods and Protocols, 2019
We describe an advanced DIVER (Deep Imaging Via Emission Recovery) detection system for two-photon fluorescence microscopy that allows imaging in multiple scattering media, including biological tissues, up to a depth of a few mm with micron resolution ...
Alexander Dvornikov   +2 more
doaj   +1 more source

The Role of Hydrogen Peroxide and Peroxiredoxins throughout the Cell Cycle

open access: yesAntioxidants, 2020
Hydrogen peroxide (H2O2) is an oxidizing agent that induces cellular damage at inappropriate concentrations and gives rise to an arrest during cell cycle progression, causing cell death.
Sukyeong Heo, Suree Kim, Dongmin Kang
doaj   +1 more source

Publisher Correction: Alteration in Fluidity of Cell Plasma Membrane in Huntington Disease Revealed by Spectral Phasor Analysis

open access: yesScientific Reports, 2018
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Sara Sameni   +3 more
doaj   +1 more source

A superior bright NIR luminescent nanoparticle preparation and indicating calcium signaling detection in cells and small animals

open access: yesCell & Bioscience, 2018
Background Near-field fluorescence (NFF) effects were employed to develop a novel near-infrared (NIR) luminescent nanoparticle (LNP) with superior brightness. The LNP is used as imaging contrast agent for cellular and small animal imaging and furthermore
Jian Zhang, Joseph. R. Lakowicz
doaj   +1 more source

Palaeomagnetic and synchrotron analysis of >1.95 Ma fossil-bearing palaeokarst at Haasgat, South Africa

open access: yesSouth African Journal of Science, 2014
Palaeomagnetic analysis indicates that Haasgat, a fossil-bearing palaeocave in the Gauteng Province of South Africa, is dominated by reversed magnetic polarity in its oldest, deepest layers and normal polarity in the younger layers.
Andy I.R. Herries   +7 more
doaj   +1 more source

Fluorescence quenching in graphene: a fundamental ruler and evidence for transverse plasmons [PDF]

open access: yesPhys. Rev. B 84, 165438 (2011), 2011
Graphene's fluorescence quenching is studied as a function of distance. Transverse decay channels, full retardation and graphene-field coupling to all orders are included, extending previous instantaneous results. For neutral graphene, a virtually exact analytical expression for the fluorescence yield is derived, valid for arbitrary distances and only ...
arxiv   +1 more source

Fluorescence interferometry [PDF]

open access: yesPhysical Review A, 2010
7 pages, 2 ...
openaire   +2 more sources

Entangled-Photon Coincidence Fluorescence Imaging [PDF]

open access: yesOptics Express 16, 16189 (2008), 2008
We extend entangled coincidence (ghost) imaging to fluorescent samples. Given the entangled photon correlation, one photon of the pair carries information on where the other photon has been absorbed and has produced fluorescence in a sample. Fluorescent molecules serve as ''detectors breaking'' the entanglement.
arxiv   +1 more source

Home - About - Disclaimer - Privacy